Track invitations, responses, and completions in seconds securely. See rates, gaps, and data quality flags. Download a tidy report for audits and sharing later.
Use this example to understand typical fields for weekly reporting.
| Week | Invited | Reachable | Started | Completed | Partial | Exclusions | Participation (%) |
|---|---|---|---|---|---|---|---|
| Week 1 | 1,200 | 1,120 | 430 | 310 | 45 | 39 | 33.6 |
| Week 2 | 1,500 | 1,410 | 520 | 392 | 60 | 48 | 32.5 |
| Week 3 | 1,350 | 1,280 | 505 | 401 | 52 | 44 | 35.4 |
Reachable = max(Delivered, Invited − Bounced)
Eligible denominator = Reachable − Ineligible − Duplicates − Fraud
Numerator = Completed (or Completed + Partial)
Participation Rate (%) = (Numerator ÷ Denominator) × 100
Start Rate (%) = (Started ÷ Denominator) × 100
Completion Rate (%) = (Completed ÷ Started) × 100
95% CI uses the Wilson score interval for a proportion.
Participation rate summarizes how effectively a study converts an eligible audience into usable responses. In this calculator, the numerator can include completed interviews only, or completed plus partials, depending on reporting policy. A stable definition allows week‑over‑week comparisons and prevents artificial lifts caused by shifting inclusion rules. When partials are counted, note the minimum progress threshold, such as reaching the final page or answering 70% of items.
Denominator choice changes the story. Invited reflects outreach volume, Reachable adjusts for bounced contacts, and Eligible removes exclusions such as ineligible screenouts, duplicates, and fraud. When panel or customer lists contain quality issues, using Eligible supports cleaner operational decisions because it focuses on people who could truly participate. For example, 1,120 reachable minus 39 exclusions yields 1,081 eligible cases for rate reporting.
Rates are estimates, especially at small n. The calculator adds a 95% confidence interval using the Wilson score method, which behaves well near 0% or 100% and avoids overly narrow ranges. Use the interval width to judge precision: wide bounds imply more uncertainty and suggest extending field time or increasing invitations. As a rule of thumb, doubling the denominator typically narrows the margin of error noticeably.
The funnel view separates attention from completion. Start rate indicates whether messages motivate opens and clicks, while completion and drop‑off rates reveal survey burden. If start rate is healthy but completion is low, shorten the questionnaire, improve mobile flow, or reduce grid questions. If starts are low, revisit subject lines, timing, incentives, and reminder cadence. Track the start gap and participation gap to quantify how many additional starts or finishes are needed to meet targets.
Exported CSV supports audit trails by preserving inputs, denominator rules, and derived metrics in one file. For governance, document what counts as fraud or duplicates, and apply consistent de‑duplication across waves. Track reminders as “touches” to evaluate diminishing returns and to comply with contact policies. Pair these metrics with cost per complete and timeline milestones to explain tradeoffs to stakeholders. Segment rates by channel, language, and device to uncover bias.
It depends on audience, incentive, channel, and survey length. Compare against your own historical waves using the same definitions, then target incremental improvements through better list hygiene, timing, and reminders.
Count partials only if they provide analyzable data and your stakeholders agree on a threshold. Keep the rule consistent across waves to avoid inflating trends when drop‑off patterns change.
Some teams track delivery separately. Reachable approximates who could see the invitation using Delivered or Invited minus Bounced. It reduces noise when email lists have undeliverable addresses.
They show a plausible range for the true participation rate in the eligible audience. Wider intervals indicate less precision. Increasing the denominator usually tightens the bounds and stabilizes reporting.
Define clear rules: repeated IDs, identical fingerprints, or failed quality checks. Remove them from the denominator and numerator consistently, and document the criteria for transparency and audits.
Click “Download PDF” to open the print dialog and save as a PDF. The page hides form controls in print mode and formats the summary for easy sharing.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.